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Photoelectromagnetic Effect Induced By Terahertz Laser Radiation In Topological Crystalline Insulators Pb1-xSnxTeдоклад на конференции
- Авторы: Galeeva A.V., Kazakov A.S., Ikonnikov A.V., Artamkin A.I., Belov D.A., Ryabova L.I., Volobuev V.V., Springholz G., Khokhlov D.R.
- Международная Конференция : 45th International Conference on Infrared, Millimeter, and Terahertz Waves
- Даты проведения конференции: 8-13 ноября 2020
- Дата доклада: 13 ноября 2020
- Тип доклада: Устный
- Докладчик: Khokhlov D.R.
- Место проведения: Буффало, United States
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Аннотация доклада:
We studied the photoelectromagnetic (PEM) effect induced by laser terahertz radiation in Pb1-xSnxTe films in the composition range x = (0.15 - 0.45), for which a transition from the trivial phase to the topological crystalline insulator phase occurs. The films had the crystallographic orientation <111>, for which appearance of topologically nontrivial surface states is expected. It is shown that in the trivial phase the amplitude of the PEM effect is determined by the power of the incident radiation, while in the topological phase the amplitude is proportional to the flux of laser radiation quanta. Possible mechanism of the effect is discussed.
- Добавил в систему: Хохлов Дмитрий Ремович